verbal lease termination question

The truth is that a verbal lease is non-enforceable. This means that there is no way to prove a verbal agreement, therefore not a valid agreement. Now, with that said, ethically if you had given her a verbal agreement to move, then you probably should. (its the fair thing to do)

You still have all the cards. Your landlord can’t force you out earlier than the 15th, since that was the verbal arrangement. If you want to stay in the apartment, you can. She has no right to kick you out (unless you stop paying rent, etc). She can tell you that a verbal agreement is the same as a written contract, but it isn’t. If she tried to evict you, she would fail. (Unless you only paid for half the month for September. If that’s the case then she can easily show your intent and validate the verbal agreement)